Final California 2014 and 2016 Integrated Report (303(d) List/305(b) Report)

Supporting Information

Regional Board 3 - Central Coast Region

Water Body Name: San Lorenzo River Lagoon
Water Body ID: CAE3041205319980828094349
Water Body Type: Estuary
 
DECISION ID
32748
Region 3     
San Lorenzo River Lagoon
 
Pollutant: Indicator Bacteria
Final Listing Decision: List on 303(d) list (being addressed by USEPA approved TMDL)
Last Listing Cycle's Final Listing Decision: List on 303(d) list (TMDL required list)(2012)
Revision Status Revised
Sources: Collection System Failure | Domestic Animals/Livestock | Onsite Wastewater Systems (Septic Tanks) | Transient encampments | Urban Runoff/Storm Sewers
TMDL Name: San Lorenzo River Watershed Pathogen TMDL (including San Lorenzo River, Lompico Creek, Carbonera Creek and the San Lorenzo River Estuary)
TMDL Project Code: 726
Date TMDL Approved by USEPA: 07/20/2011
Impairment from Pollutant or Pollution: Pollutant
 
Regional Board Conclusion: No new data were assessed. However, a TMDL has been approved by US EPA since the 2010 assessment cycle.

Note the pollutant name has been changed from Pathogens to Indicator Bacteria.

303(d) listing decisions made prior to 2006 were not held in an assessment database. The Regional Boards will update this decision when new data and information become available and are assessed. The San Lorenzo River Watershed Pathogen TMDL (including San Lorenzo River Estuary, San Lorenzo River, Branciforte Creek, Camp Evers Creek, Carbonera Creek and Lompico Creek) was approved by the Central Coast Regional Board on March 21, 2008. This TMDL was approved by USEPA 07/20/2011. In accordance with section 2.2 of the Policy, there is sufficient justification to place it in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard.
 
Regional Board Decision Recommendation: This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. The decision has not changed.

After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list in the 'Being Addressed' portion of the List because applicable water quality standards are exceeded, pollutant contributes to or causes the problem but a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard.
 
State Board Review of Regional Board Conclusion and Recommendation:
 
State Board Decision Recommendation: After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.
 
 
Line of Evidence (LOE) for Decision ID 32748, Indicator Bacteria
Region 3     
San Lorenzo River Lagoon
 
LOE ID: 4006
 
Pollutant: Pathogens
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: Not Specified
Data Used to Assess Water Quality: Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006.
Data Reference: Placeholder reference pre-2006 303(d)
 
SWAMP Data: Non-SWAMP
 
Water Quality Objective/Criterion: Unspecified
Objective/Criterion Reference: Placeholder reference pre-2006 303(d)
 
Evaluation Guideline: Unspecified
Guideline Reference: Placeholder reference pre-2006 303(d)
 
Spatial Representation: Unspecified
Temporal Representation: Unspecified
Environmental Conditions: Unspecified
QAPP Information: Unspecified
QAPP Information Reference(s):